ASTROSAT CZTI

Data Quality Report

Orbit 58554

Creation date: 2026-07-24T23:15:47.865559
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_044T04_9000006592_58554cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58554cztM0_level2_quad_clean.evt
Size (bytes)437,814,72095,711,040
Size417.5 MB 91.3 MB
Events in quadrant A3,386,073640,195
Events in quadrant B4,397,962636,949
Events in quadrant C3,295,696613,999
Events in quadrant D4,622,164554,231

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146532
B0174902
C0145182
D0181922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6488891.371763%
B64885468.415536%
C6488640.986436%
D64882974.577682%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7583 6489 32 32 0.42% 0.49%
B 7583 6489 273 273 3.60% 4.21%
C 7583 6489 33 33 0.44% 0.51%
D 7583 6489 232 232 3.06% 3.58%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 17 241401 1330.22 725 704 180.9
A 3 245 111117 610.2 725 704 180.9
A 10 248 35720 193.52 725 704 180.9
B 6 255 959099 6691.38 670 645 143.2
B 4 171 204989 1426.61 670 645 143.2
B 8 234 173282 1205.25 670 645 143.2
C 12 252 139810 715.08 705 698 194.5
C 4 5 133809 684.23 705 698 194.5
C 9 237 50204 254.48 705 698 194.5
D 2 249 934696 4655.07 693 661 200.6
D 8 240 217580 1081.09 693 661 200.6
D 3 12 159802 793.13 693 661 200.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter